The flow meters are a window into the system. It could be that the fluid quality has changed, rusty water potentially indicating continued air infiltration into the system. It is a good practice to check for a system leak, if the water color is changing. The frequency of zone cycling in different manifold locations could lead to some flow meters looking clearer than others.
The flow meters are a window into the system. It could be that the fluid quality has changed, rusty water potentially indicating continued air infiltration into the system. It is a good practice to check for a system leak, if the water color is changing. The frequency of zone cycling in different manifold locations could lead to some flow meters looking clearer than others.